# RancherOs add internal CA chain

**URL:** <https://forums.suse.com/t/rancheros-add-internal-ca-chain/8280>\
**Category:** RancherOS\
**Created:** [January 23, 2018, 9:51pm UTC](https://forums.suse.com/t/rancheros-add-internal-ca-chain/8280 "2018-01-23T21:51:02Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Darin\_Truckenmiller](https://avatars.discourse-cdn.com/v4/letter/d/96bed5/32.png) [@Darin\_Truckenmiller](https://forums.suse.com/u/Darin_Truckenmiller)\
**Post date:** [January 23, 2018, 9:51pm UTC](https://forums.suse.com/t/rancheros-add-internal-ca-chain/8280/1 "2018-01-23T21:51:02Z")

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I’m running RancherOs v1.6.10 and when attempting to docker login/pull from my private registry signed by an internal CA authority I get a “x509: certificate signed by unknown authority” error. How do I add the CA certchain to ROS? Googling got me [here](https://github.com/rancher/os/issues/1795) so it looks like it’s a feature that has not been implemented. If this is true is there a way to get this done in an “unsupported” way?